Step 28 — Power Card
Remove the single black T8 Torx screw from the power card.
Grasp the power card near the black plastic shield toward the center of the case and lift up.
Occasionally, a post connecting the power card to the logic board will come out with the power card.
Step 29 — DC & Sound Card
Lift the sound card out by pulling up on both the right and left sides.
If the sound card sticks, pull the black metal wall of the casing toward you while lifting the right side of the sound card up.
Step 30 — Fan
Disconnect the fan connector from the logic board.
Remove the fan by pulling it directly up.